This issue is a follow-up to #238. First steps have been taken to implement pasting with the merging of #553 and WordPress/gutenberg#13841, however, additional work is required. Known issues and additional work needed are listed below.

Known issues

• Pasting into selected text causes a red screen - TypeError: this.props.value.trimLeft is not a function (was working before merging recent changes to RichText - may be related to getRecord) - (fixed with PR Fixes a red sceen when pasting. #638)
• Pasting from some sources causes a red screen (related comment, fixed with PR Fix for node.rel crash #630)
• Pasting images along with text sometimes omits the images #827 Pasting images along with text sometimes omits the images (related comment) (fixed with Implement jsdom node traversal properties #1083)
• When bullet lists are copied to the clipboard and pasted to a paragraph block, the bullets are lost. Currently, list blocks are not supported. When support is added, behavior should be tested again.
• Fix pasting into heading blocks (see known issues in PR First steps to implement pasting external content #553)
• Fix pasting into code blocks (see known issues in PR First steps to implement pasting external content #553) -> Code block #822
• After pasting, cursor should move to the end of the pasted content #828 Fix cursor position after paste (see known issues in PR First steps to implement pasting external content #553)
• Fix or log loss of inline styles on pasted span tags
• Fix pasting URLs with a selection (fixed with PR [iOS] Fix for a links pasting issue #644).
• Pasting inline text into a link splits the link apart Pasting inline text into a link splits the link apart #839

Additional work

• Add try/catch fallback to plain text to guard against errors (in production) in unexplored code paths, in lieu of testing (fixed with PR Implement pasteHandler with plain text fallback #646)
• Improve comments in jsdom-patches.js (related comment) (PR Add comments to clarify functions in jsdom-patches file. #826)
• Log feature degradation caused by mobile DOM (related comment)
• Research additional patches for jsdom-jscore to support missing features from web code
• Refactor splitContent to a common interface with web, consider using options object (related comment)
• Handle deprecation of onSplit as discussed here. Related: RichText: mark onSplit prop as unstable  #394
• Create tests (manual tests here as starting point) (UI tests added here: Add Paste UI Tests for Android #1100)
• Support normalizing inline styles on <span> tags (details here)
• Support for third party keyboard / clipboard managers
• Target 3 from Pasting external content #238 (WP apps, unsupported blocks, and uploading images on the spot)